MEMORANDUM**

Jesus Silva-Gamez appeals the sentence imposed following revocation of his term of supervised release. We review de novo, United States v. Anglin, 215 F.3d 1064, 1066 (9th Cir. 2000), and we dismiss.

On appeal, Silva-Gamez contends that his statute of conviction, 21 U.S.C. § 960(b), is unconstitutionally vague in that it does not establish a maximum term of supervised release. We dismiss the appeal for lack of jurisdiction because prior to his guilty plea conviction, Silva-Gamez entered into a plea agreement in which he knowingly and voluntarily waived his right to appeal or collaterally attack his conviction and sentence. See United States v. Nguyen, 235 F.3d 1179, 1182-83 (9th Cir. 2000) (recognizing that courts will enforce waiver of appeal rights if waiver language encompasses defendant’s right to appeal on grounds claimed on appeal, and if waiver is knowingly and voluntarily made).

DISMISSED.